Structure for adapting oil burners to concrete-mixer apparatus



w. c, ELZE 1,767,746 STRUCTURE FOR ADAPTING OIL BURNERS .TO CONCRETEMIXEii APPARATUS June 24,- 1930.

2 Sheets-Sheet 1 Filed Oct. 25, 1926 I INVENTOR Whiter CEYze ATTO-RNEYJung 24, 1930. w. c. ELZE 1,767,746

STRUCTURE ox ADAPTING OIL BURNERS TO CONCRETE MIXER APPARATUS Filed Oct.25, 1926 2 Sheets-Sheet 2 O O O 2G2 Q? Q.

INVEQNTOR w ge/6 5726 ATTORNEY Patented June 24, 1930 UNITED STATES arm"cries WALTER C. ELZE, OF FOREST HILLS, NEW YORK, ASSIG-INORTO HAUCKMANUFACTUR- ING COMPANY, OF BROOKLYN, NEW YORK, A CORPORATION OF NEWYORK STRUCTURE FOR ADAPTING OIL BUR-NERS TO CONCRETE-MIXER APPARATUSApplication filed October 25, 1926.

The invention relates to concrete mixers of the type wherein a batch ofthe materials is rotated in a suitable drum provided with single openingand which drum is arranged to be then tilted to discharge the load. Inoperating such mixtures during colder seasons of the year, difficulty isexperienced due to the lumping or balling of the materials employedbecause of the low temperatures to which the same are exposed and thedischarged aggregate, also, often freezes before setting of the same hastaken place.

In a prior U. S. Patent No. 1,578,021, I have indicated means to obviatethese difiiculties by associating with such concrete mixer apparatus asuitable burner member for directing thereto a flame jet in order tovheat the drum portion and charge.

Difficulty has been experienced, however,

in connection with the installation of the said burner apparatus, moreparticularly in adapting it to the various sizes and models of concretemixer apparatus of this type as placed on the market by differentmanufacturers and especially in connection with the adaptation of burnerapparatus to existing units already in service.

The present invention has for its object a universal form of attachingmember whereby the burner may conveniently and readily be installedeither initially in the manufacture of the mixer apparatus orsubsequently thereto as to existing'mixers and, for example, already inuse. Owing tothe various sizes of the mixers required and the variety indesign in, for example, the location of the water tank'and' chute forsame utilized for supplyingwater to the aggregate, and the variation inshape and size and the'location of the structural members of themixerapparatus, it has not heretofore been possible to provide suchburner apparatus to. these mixers without, as a rule, designing aspecial mounting for each particular type. This, of course, is generallyimpractical and often. impossible. from a commercial standpoint.Applicants practise has been, therefore, to only initially equip mixerswith a burner and which is specially designed therefor, leavinguntouched the large field of Serial No. 143,987.

mixers already in use and mixers of more or less special type.

With'the novel burner supporting structure or device hereinafter morefully described, it is possible to accommodate a burner to various sizesand styles of mixer suitable tightening tool for specially de signedbolts and nuts associated with the bracket in the novel manner setforth.

The nature of the invention, however, will best be understood whendescribed in connection with the accompanying drawings, in which Fig. 1is a side elevation of concrete mixer apparatus with single-opening,tilting-type drum, and shown equipped with burner apparatus mountedthereon by the novel mounting member.

Fig. 2 is a plan view of the novel burner supporting member and two ofthe structural members of the mixer superstructure to which the saidmember is to be attached. Figs. 3 and 4 are transverse sections takenrespectively on the lines 3 3, and 4-4, Fig. 2, and looking in thedirection of the arrows. Referring to thedrawings, 1O designates, by wayof example, a suitable wheeled truck for carrying the loading, mixing,water supplying and heating devices with operating mechanism therefor,the same being of the usual and well known construction and design, andcomprise a loading bucket or hopper 11 to which the material to be mixedis delivered in the usual manner, whereupon it is to be elevated anddischarged into a mixing drum 12 of the tilting type with a singleopening or mouth 13 thereof located to coact with the loading bucket orhopper and receive therefrom the contents of the same for mixing in thesaid drum 12, as is well understood. A water delivery chute '14 is alsoprovided todeliver to the mouth 13 the water for the aggregate in thedrum,

water being arranged to be dumped into the chute, preferably, from anoscillatable tank or container receiving in turn thru a pipe 16 thewater from a suitable source (not shown). The apparatus hereinbeforedescribed as well as the burner 17 is of more or less standard designand forms no particular part of the present invention which relates moreespecially to a mounting member for properly assoc-iatingthe said'burnerwith respect to the mouth 18 of the mixing drum.

WVhile it will be appreciated that various styles and sizes of mixerapparatus are main ing member forming the subject of the presentinvention 18 to be attached.

As hereinfore stated, the construction of this member is to be such aswill permit of its installation without the use of any special toolsother than :a tightening wrench or the like for bolts and nuts andwithout requiring any change in or drilling of the sup-portingsuperstructure.

To this end, the member comprises a pair of lateral frame pieces, as theangle pieces 22 and 23, and a tranverse holding angle piece 24 which isprovided at its ends with respective slots 25 through which is adaptedto pass corresponding bolts 26 on which work csi nuts 27 for securingrigidly the said transverse holding angle piece to the respectivelateral members 22 :and 23. The latter for this purpose are providedover the-ir'len-gths with 'a series of perforations ?,0 to admitofseou-ring the tranverse member at various portions along the length ofthe said lateral members, the slots allowing for a limited variationin'angularity. Further adjustment may be afforded by perforations 25between the slots 25; v

, The member 24 at its middle portion or intermediate port-ions isdesigned to support a substantially semi-circular clamping or grippingmember comprising the pair of blocks 31 thru which and thru perforations32inone of the sides of the angle piece 24 are. arranged'to pass theends of a rod or clevis -33 curved suitably intermediate its ends andadapted to be tightened by nuts These clamping blocks and curved portionof the rod are designed to receive -and retain the burner memberl'?which may thus be rigidly positioned by suitably taking up on the nuts34 to draw the rod to the Wall lateral members 22 and 23 ,may assumevarious angles and positions in a vertical plane relatively to thesuperstructure by which they are to be supported; and to this end,

provision must be made for suitably adapting the member 24 with clampingmeans to said superstructure, namely the transverse inner and outerangle members 20 and 21 thereof. Over one edge of the former, forexample, is therefore arranged to be brought the turned-over end or hookportion 35 of a bolt 3'6 whose other end is designed to pass through aperforation 37 of the top wall of a member 22 or 23. A nut 38 fits overthe threaded end of said hook bolt 36 and, by tightening same, a lateralmember'22 or 23 may be rigidly secured in the desired position in aplane at right angles to the plane of the transverse piece 20.

In the attachment of the inner ends of the lateral members 22 and 23 tothe transverse member 21, further freedom of adjustment is necessary andtherefore two attaching members 40 and 41 are employed. A bolt 40 tothis end is bent at right angles,

one portion thereof being adapted. to fit through the top Wall of themember while the 'oth'er' fits into a slot '42 in the attaching member41 which is in the nature of a hook member having a turned-over endportion 48 which fits over the edge of the side wall of transversemember -21. Nuts 44 and 45 are provided overth'e respective threadedends of the bolt 40 so that when the proper angular position of thelateral pieces in,"for example, aivertical plane has been deterined,said position may be maintained by tightening the aforesaid nuts.

By this exped ent, various angularities and positions both in a verticaland horizontal plane are possible for the lateral members 22 and 23 andwhich will allow of correspondingly altering the position of the burnermember 17 retained by the transverse member 24, it being understood thatthe positions of said lateralpieces and 23 relatively to the transversepieces :202and i21'are tank 15 and other members of the mixer apparatusmay be avoided 'by properly locating the burner supporting"elements, forexample, as indicated by thepositioin shown by the dotted lines,Fig. :2,the position ,of the burner 17 being maintained. Icla-i-m: v 1. Athree-piece.

separable supporting 1 20 not restricted nor limlt'ed; thereby so :that'structure for rigidly securing a burner member in position onconcrete-mixer apparatus of the character set forth, such structurecomprising two lateral angle pieces perforated along one side, atransverse angle piece slotted at its outer ends, clamping means for theburner and carried by the transverse angle piece, bolts and nuts foradjustably securing the outer ends of said transverse angle piecethrough its said slots to the lateral pieces, adjustable securing meansat the inner end of each of the lateral pieces for attaching the same tothe mixer apparatus, and securing means at an intermediate point of eachof the lateral pieces for attaching the said pieces to the mixerapparatus.

2. A three-piece separable supporting structure for securing a burnermember in position on concrete mixer apparatus of the character setforth, such structure comprising two lateral angle pieces perforatedalong one side, a transverse angle piece slotted at its outer ends,clamping means for the burner and carried by the transverse angle piece,bolts and nuts for adjustably securing the outer ends of said transverseangle piece to the lateral pieces, adjustable securing means at theinner end of each of the lateral angle pieces and consistingof a rodWith hook at one end and slotted at the opposite end, a right-angledbolt member threaded at both ends, one end being adapted to pass througha lateral angle piece and the other end through the slotted portion ofthe hooked rod, nuts fitting over the threaded ends of said bolt member,and securing means at an intermediate point of each of the lateralmembers.

3. A three-piece separable supporting structure for securing a burnermember in position on concrete mixer apparatus of the character setforth, such structure comprising two lateral angle pieces perforatedalong one side, a transverse angle piece slotted at its outer ends,clamping means for the burner and carried by the transverse angle piece,bolts and nuts for adjustably securing the outer ends of said transverseangle piece to the lateral pieces, adjustable securing means at theinner end of each of the lateral angle pieces and consisting of a rodwith hook at one end and slotted at the opposite end, a right-angledbolt member threaded at both ends, one end being adapted to pass througha lateral angle piece and the other end through the slotted portion ofthe hooked rod, nuts fitting over the threaded ends of said bolt member,and securing means at an intermediate point of each of the lateralmembers and consisting of a bolt member havinga hook at one end and itsother end threaded and adapted to pass through a lateral piece, and a:nut fitting over the threaded end of said bolt. c

- 4. A three-piece separable supporting structure for rigidly securing aburner member in position on a concrete mixer apparatus of the characterset forth and comprising two lateral angle pieces perforated along oneside, a transverse angle piece slotted at its outer ends and providedwith perforations between the slotted ends, clamping means for theburner and carried by the transverse angle piece, bolts and nuts foradjustably securing the outer ends of said transverse angle piecethrough its said slots to the lateral pieces, adjustable securing meansat the inner end of each of the lateral pieces for attaching the same tothe mixer apparatus and securing means at an intermediate point of eachof the lateral pieces for attaching the said pieces to the mixerapparatus.

In testimony whereof I affix my si nature.

WVALTER C. ELZE.

